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CVE-2026-73492: Cgi Unescape Html Uri Validation Bypasscve-2026-73492-cgi-unescape-html-uri-validation-bypass

CGI.unescapeHTML does not decode semicolon-less numeric character references (such as &#58 or &#x3a). Relying on CGI.unescapeHTML alone prior to URI scheme validation can allow malicious protocols like javascript: to bypass sanitization in web browsers.

RubyCVE-2026-73492 CWE-79

by Provallyupdated 2026-09-02Apache-2.0

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